3 files changed, 82 insertions, 1 deletions

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_context.h b/src/gallium/drivers/nouveau/nvc0/nvc0_context.h
index eb057bf2489..c1351062676 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_context.h
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_context.h
@@ -434,6 +434,7 @@ nvc0_video_buffer_create(struct pipe_context *pipe,
 
 /* nvc0_push.c */
 void nvc0_push_vbo(struct nvc0_context *, const struct pipe_draw_info *);
+void nvc0_push_vbo_indirect(struct nvc0_context *, const struct pipe_draw_info *);
 
 /* nve4_compute.c */
 void nve4_launch_grid(struct pipe_context *, const struct pipe_grid_info *);
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c b/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c
index 3fbe7614e52..7d6be9382d1 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c
@@ -1040,7 +1040,10 @@ nvc0_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
    }
 
    if (nvc0->state.vbo_mode) {
-      nvc0_push_vbo(nvc0, info);
+      if (info->indirect)
+         nvc0_push_vbo_indirect(nvc0, info);
+      else
+         nvc0_push_vbo(nvc0, info);
       goto cleanup;
    }
 
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_vbo_translate.c b/src/gallium/drivers/nouveau/nvc0/nvc0_vbo_translate.c
index 256e20df2e4..4333fb26d23 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_vbo_translate.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_vbo_translate.c
@@ -466,6 +466,83 @@ nvc0_prim_gl(unsigned prim)
    }
 }
 
+typedef struct {
+   uint32_t count;
+   uint32_t primCount;
+   uint32_t first;
+   uint32_t baseInstance;
+} DrawArraysIndirectCommand;
+
+typedef struct {
+   uint32_t count;
+   uint32_t primCount;
+   uint32_t firstIndex;
+   int32_t  baseVertex;
+   uint32_t baseInstance;
+} DrawElementsIndirectCommand;
+
+void
+nvc0_push_vbo_indirect(struct nvc0_context *nvc0, const struct pipe_draw_info *info)
+{
+   /* The strategy here is to just read the commands from the indirect buffer
+    * and do the draws. This is suboptimal, but will only happen in the case
+    * that conversion is required for FIXED or DOUBLE inputs.
+    */
+   struct nvc0_screen *screen = nvc0->screen;
+   struct nouveau_pushbuf *push = nvc0->base.pushbuf;
+   struct nv04_resource *buf = nv04_resource(info->indirect->buffer);
+   struct nv04_resource *buf_count = nv04_resource(info->indirect->indirect_draw_count);
+   unsigned i;
+
+   unsigned draw_count = info->indirect->draw_count;
+   if (buf_count) {
+      uint32_t *count = nouveau_resource_map_offset(
+            &nvc0->base, buf_count, info->indirect->indirect_draw_count_offset,
+            NOUVEAU_BO_RD);
+      draw_count = *count;
+   }
+
+   uint8_t *buf_data = nouveau_resource_map_offset(
+            &nvc0->base, buf, info->indirect->offset, NOUVEAU_BO_RD);
+   struct pipe_draw_info single = *info;
+   single.indirect = NULL;
+   for (i = 0; i < draw_count; i++, buf_data += info->indirect->stride) {
+      if (info->index_size) {
+         DrawElementsIndirectCommand *cmd = (void *)buf_data;
+         single.start = info->start + cmd->firstIndex;
+         single.count = cmd->count;
+         single.start_instance = cmd->baseInstance;
+         single.instance_count = cmd->primCount;
+         single.index_bias = cmd->baseVertex;
+      } else {
+         DrawArraysIndirectCommand *cmd = (void *)buf_data;
+         single.start = cmd->first;
+         single.count = cmd->count;
+         single.start_instance = cmd->baseInstance;
+         single.instance_count = cmd->primCount;
+      }
+
+      if (nvc0->vertprog->vp.need_draw_parameters) {
+         PUSH_SPACE(push, 9);
+         BEGIN_NVC0(push, NVC0_3D(CB_SIZE), 3);
+         PUSH_DATA (push, NVC0_CB_AUX_SIZE);
+         PUSH_DATAh(push, screen->uniform_bo->offset + NVC0_CB_AUX_INFO(0));
+         PUSH_DATA (push, screen->uniform_bo->offset + NVC0_CB_AUX_INFO(0));
+         BEGIN_1IC0(push, NVC0_3D(CB_POS), 1 + 3);
+         PUSH_DATA (push, NVC0_CB_AUX_DRAW_INFO);
+         PUSH_DATA (push, single.index_bias);
+         PUSH_DATA (push, single.start_instance);
+         PUSH_DATA (push, single.drawid + i);
+      }
+
+      nvc0_push_vbo(nvc0, &single);
+   }
+
+   nouveau_resource_unmap(buf);
+   if (buf_count)
+      nouveau_resource_unmap(buf_count);
+}
+
 void
 nvc0_push_vbo(struct nvc0_context *nvc0, const struct pipe_draw_info *info)
 {